Train 126 from Westfield to Whangarei leans into the curve approaching Helensville station where there will be a crew change with south-bound train 125.
Trains on 3' 6" (1.067m) track from Whangarei to Bluff with virtually heritage rebuilt EMD and GE locomotives still the mainstay power. The network was privatized in 1990's and operated by Toll until 2008 when state owned KiwiRail was established.